公开(公告)号：US3865490A

公开(公告)日：1975-02-11

申请号：US39264473

申请日：1973-08-29

Applicant: MC DONNELL DOUGLAS CORP

Inventor： GROSSMAN JACK J

IPC: G01J3/18 ,  G01J3/44 ,  G01J3/40

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/0243 ,  G01J3/0256 ,  G01J3/0291 ,  G01J3/1804 ,  G01J3/44 ,  G02B5/09

Abstract: A filter spectrograph unit for use in a micro-Raman spectrometer system or a remote sensing system is formed by combining an infinitely variable spectral line rejection filter (having appropriate entrance optics) functionally and operatively with a dispersing spectrograph. The line rejection filter is a modified form of a zero-dispersion double monochromator having an input light signal including laser light scattered from, for examle, minute Raman-active particles. The modified double monochromator includes an acylindrical mirror positioned so that the laser line will exit through an aperture in the mirror and all other spectral lines will be reflected and reformed by the modified double monochromator into an output light signal containing all of the original spectral information, less the rejected laser line. The dispersing spectrograph is integrally coupled to the modified double monochromator and produces from the output light signal a display of the entire Raman spectrum suitable for parallel readout and rapid data analysis.

Abstract translation: 用于微拉曼光谱仪系统或遥感系统的滤光器光谱仪单元通过功能性和可操作地与分散光谱仪组合无级可变光谱线路滤除器（具有适当的入射光学器件）而形成。 线路滤除滤波器是具有输入光信号的零色散双重单色器的修改形式，包括从例如微小的拉曼活性粒子散射的激光。 改进的双重单色器包括一个圆柱形反射镜，其定位使得激光线将通过反射镜中的孔而离开，并且所有其它谱线将被修改的双色单元反射和重新形成包含所有原始光谱信息的输出光信号， 减少被拒绝的激光线。 分散光谱仪整体耦合到改进的双色单色器，并从输出光信号产生适合于并行读出和快速数据分析的整个拉曼光谱的显示。